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Finding the Fourth Proportional to 518,343.27, 777,527.19 and 139,264.47

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Solution

The fourth proportional to 518,343.27, 777,527.19 and 139,264.47 is: 208,900.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,343.27 : 777,527.19 = 139,264.47 : x
  2. Step 2: Convert to fraction form
    518,343.27/777,527.19 = 139,264.47/x
  3. Step 3: Cross multiply
    518,343.27x = 777,527.19 × 139,264.47
  4. Step 4: Simplify right side
    518,343.27x = 108,281,912,025.94
  5. Step 5: Solve for x
    x = 108,281,912,025.94/518,343.27
  6. Step 6: Final answer
    x = 208,900.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.